JPS6388428A - Smoke detector - Google Patents

Smoke detector

Info

Publication number
JPS6388428A
JPS6388428A JP23316486A JP23316486A JPS6388428A JP S6388428 A JPS6388428 A JP S6388428A JP 23316486 A JP23316486 A JP 23316486A JP 23316486 A JP23316486 A JP 23316486A JP S6388428 A JPS6388428 A JP S6388428A
Authority
JP
Japan
Prior art keywords
smoke
processor
itv cameras
images
chimney
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP23316486A
Other languages
Japanese (ja)
Inventor
Katsumi Kubo
久保 克己
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP23316486A priority Critical patent/JPS6388428A/en
Publication of JPS6388428A publication Critical patent/JPS6388428A/en
Pending legal-status Critical Current

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  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To enable inspection and monitoring of smoke automatically, by providing at least two ITV cameras to photograph a visible smoke discharged from a stack. CONSTITUTION:Two ITV cameras 1 and 2 are arranged near a stack 13 to be taken as separated by a fixed parallax l. Images from the ITV cameras 1 and 2 are controlled with a channel selector 3 separately to be converted into digital signal with a analog processor 5 from video signals and furthermore, the digital signals undergo an arithmetic processing with an arithmetic unit 6 to be stored into a frame memory 7. Two images are subjected to a coordinate conversion by a parallax l already determined with a control processor 8 to determine a difference between the both with an arithmetic processor 9 and a portion with the difference of '0', namely, clod or the like is extracted, which allows the extraction of a part only equivalent to the tip length of the stack to detect smoke discharged automatically. This enables detection free from adverse effect of smoke or the like on the apparatus and without being restricted by weather conditions thereby improving the integrity of a plant.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は発電施設等に用いられる煙検出装置に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a smoke detection device used in power generation facilities and the like.

(従来の技術) 例えば、発電施設においては石炭等を燃焼することによ
り排煙を生ずる。これら排煙は、通常、集塵装置等を経
由して煙突から放出されている。
(Prior Art) For example, in a power generation facility, exhaust smoke is generated by burning coal or the like. These flue gases are normally released from a chimney via a dust collector or the like.

しかし、集塵装置等が故障すると、公害物質を含んだ煙
が外部環境に放出される可能性がおる。
However, if a dust collector or the like malfunctions, there is a possibility that smoke containing pollutants will be released into the outside environment.

そこで、従来は煙突の先端等に発光ダイオード(LED
)とフォトセンサとを対向させ、煙が通過する際に煙に
発光ダイオード(LED)から発せられる光が吸収され
る量をフォトセンサで検出して煙を検出していた。
Therefore, in the past, light emitting diodes (LEDs) were installed at the tip of the chimney, etc.
) and a photosensor to face each other, and the photosensor detects smoke by detecting the amount of light emitted from a light emitting diode (LED) absorbed by the smoke as it passes through.

(発明が解決しようとする問題点) ところで、上述した従来技術で採用されていた発光ダイ
オード(LED)とフォトセンサによる発光受光方式に
よる煙検知装置は、煙によりフォトセンサがよごれてく
ると、その性能が劣化してくる。
(Problems to be Solved by the Invention) By the way, the smoke detection device using the light emitting/receiving method using a light emitting diode (LED) and a photosensor, which was adopted in the above-mentioned prior art, detects a problem when the photosensor becomes dirty with smoke. Performance will deteriorate.

また、煙突の先端に検出装置を設置しているため、発光
ダイオード(LE[))と7オトセンサをときどき交換
する必要があり、保守性が極めて悪かったので、遠方か
ら煙を監視し、自動的に煙を検出ができる装置が望まれ
ていた。
In addition, since the detection device is installed at the tip of the chimney, it is necessary to replace the light emitting diode (LE[)) and the 7-point sensor from time to time, making maintenance extremely difficult. There was a desire for a device that could detect smoke.

本発明は上記事情に鑑みてなされたもので、その目的は
、煙の点検監視を自動的に行な得る煙検出装置を提供す
ることにある。
The present invention has been made in view of the above circumstances, and an object thereof is to provide a smoke detection device that can automatically inspect and monitor smoke.

し発明の構成] (問題点を解決するための手段) 本発明は上記目的を達成するために、煙突から放出され
る可視状の煙を撮影する2台のITVカメラと、このI
TVカメラからのアナログ信号をディジタル画像に変換
するアナログプロセッサと、前記2台のITVカメラか
らアナログプロセッサへの2入力を切り変えるチャンネ
ルセレクタと、それらディジタル画像から座標変換2直
伸演算する演算プロセッサおよび画像メモリと、これら
処理系を制御する制御プロセッサおよび出力結果を表示
する表示装置とからなることを特徴とするものである。
[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention includes two ITV cameras that photograph visible smoke emitted from a chimney, and this ITV camera.
An analog processor that converts an analog signal from a TV camera into a digital image, a channel selector that switches between two inputs from the two ITV cameras to the analog processor, an arithmetic processor that performs coordinate conversion and 2-direction calculation from these digital images, and an image. It is characterized by comprising a memory, a control processor that controls these processing systems, and a display device that displays the output results.

(作 用) 本発明の煙検出装置によると、2台のカメラの映像信号
を濃度情報8ビツトの値をもつデジタル画像に変換して
、画像メモリに格納する。そして、この2枚の画像を既
に定められている視差分で座標変換し、両者の差を求め
、差の値が“Ottの部分すなわち雲等を抽出すること
により、゛煙突先端距離部分だけが抽出でき、放出され
る煙が自動的に検出できる。
(Function) According to the smoke detection device of the present invention, the video signals of the two cameras are converted into a digital image having a value of 8-bit density information, and the digital image is stored in the image memory. Then, these two images are coordinate-transformed using the parallax that has already been determined, the difference between the two is calculated, and by extracting the part where the difference value is "Ott", that is, the cloud, etc., only the "chimney tip distance part" is can be extracted and the emitted smoke can be automatically detected.

(実施例) 本発明の実施例を図面について説明する。(Example) Embodiments of the present invention will be described with reference to the drawings.

第1図は本発明の一実施例のブロック構成図であり、同
図において、ITVカメラ1およびITVカメラ2のそ
れぞれをチャンネルセレクタ3を介して映像信号を照度
に応じて8ビツトに変換し、ディジタル画像化するアナ
ログプロセッサ5に接続する。このアナログプロセッサ
5は入力デジタル画像を処理する演算ユニット6を介し
てフレームメモリ7に接続される。そして、アナログプ
ロセッサ5.演算ユニット6、フレームメモリ7からな
る画B!処理部は高速バス11に接続される。演算プロ
セッサ9は制御プロセッサ8を介して高速バス11に接
続される。
FIG. 1 is a block configuration diagram of an embodiment of the present invention. In the same figure, video signals of ITV cameras 1 and 2 are converted to 8 bits according to illuminance via channel selectors 3, and It is connected to an analog processor 5 for digital imaging. This analog processor 5 is connected to a frame memory 7 via an arithmetic unit 6 for processing input digital images. and analog processor 5. Picture B consisting of arithmetic unit 6 and frame memory 7! The processing section is connected to the high speed bus 11. Arithmetic processor 9 is connected to high speed bus 11 via control processor 8 .

また、ITVカメラ1およびITVカメラ2のそれぞれ
の2入力信号を制御するためのインターフェース4と、
点検結果を表示する表示装置10は入出力バス12を介
して高速バス11に接続されている。このインターフェ
イス4は信号を直接切賛えるチャンネルセレクタ3に接
続されている。
Further, an interface 4 for controlling each of the two input signals of the ITV camera 1 and the ITV camera 2;
A display device 10 for displaying inspection results is connected to a high-speed bus 11 via an input/output bus 12. This interface 4 is connected to a channel selector 3 which can directly access the signal.

次に、上記実施例の作用について説明する。なお、本実
施例では視差を固定にした装置について説明することに
する。
Next, the operation of the above embodiment will be explained. Note that in this embodiment, an apparatus in which parallax is fixed will be explained.

第2図に示すように、rTVカメラ1,2を2台、対象
となる煙突13の近傍で、ある一定視差lたけ離れて配
置する。このようにして得られる像は、第3図(a)、
(b)に示すものでおる。すなわち、ITVカメラ1に
よる像は第3図(a>に、ITVカメラ2による像は第
3図(b)に示す。図中、14は背景となる雲、15は
検知の対象となる煙である。
As shown in FIG. 2, two rTV cameras 1 and 2 are placed near the target chimney 13, separated by a certain parallax l. The images obtained in this way are shown in Figure 3(a),
(b). That is, the image taken by ITV camera 1 is shown in Figure 3 (a), and the image taken by ITV camera 2 is shown in Figure 3 (b). In the figure, 14 is a cloud that is the background, and 15 is smoke that is the detection target. be.

ITVカメラの画像は1台ずつチャンネルセレクタ3に
制御されてアナログプロセッサ5で映像信号をディジタ
ル信号に変化させ、更にそのディジタル信号を演算ユニ
ット6により演算処理してフレームメモリ7に格納され
る。
Images from the ITV cameras are controlled one by one by a channel selector 3, and an analog processor 5 converts the video signal into a digital signal.The digital signal is further processed by an arithmetic unit 6 and stored in a frame memory 7.

左右に相当する画像16.17である第3図(a)。FIG. 3(a) is the image 16.17 corresponding to the left and right.

(b)についてそれぞれ微分処理を行なって線分を強調
し、その後領域分割を行う。その領域分割像18につい
て第3図(C)に示すように番号■。
Differential processing is performed on each of (b) to emphasize line segments, and then area division is performed. As shown in FIG. 3(C), the area divided image 18 is numbered ■.

・・・、■について2値化する。この2値化した2枚の
画像の差分をとる。すなわち、ITVカメラ1で1qた
情報(2値化像)を視差分だけ右に座標変換(移動)し
たものとITVカメラ2で得た情報(21![化像)と
について差を求める。例えば、第3図<c>において、
ITVカメラ1の■とITVカメラ2の■について差を
求め0″か否かをそれぞれで求めていく。そして、全て
の領1成分割像18について行なう。こうして、得られ
た像は第4図(−a)のようになる。これは背景となる
雲等が除去された状態図である。その画像について既に
既知の煙突13を引き去り、第4図(b)に示すような
像すなわち雲を(qる。このようにして、煙突から放出
する煙を検出するものである。
..., ■ is binarized. The difference between these two binarized images is calculated. That is, a difference is found between information (binarized image) obtained by ITV camera 1 by 1q and coordinate transformed (moved) to the right by the amount of parallax and information obtained by ITV camera 2 (21![transformed image). For example, in Figure 3 <c>,
Find the difference between ■ for ITV camera 1 and ■ for ITV camera 2, and determine whether it is 0'' or not for each. Then, perform this for all region 1 component divided images 18. The images thus obtained are shown in Figure 4. (-a). This is a state diagram in which the background clouds, etc. have been removed. For that image, the already known chimney 13 is removed, and an image or cloud as shown in FIG. 4(b) is created. (q) In this way, smoke emitted from a chimney is detected.

[発明の効果] 以上説明したように、本発明の煙検出装置によれば、発
電i設等の煙突から放出される煙を常時監視する作業を
自動化でき、かつ煙等によりvt置が悪影響を受けるこ
とがなく、ざらに気象条件にとられれない検出が可能に
なり、これによりプラントの健全性の向上が図られると
いうすぐれた効果を秦する。
[Effects of the Invention] As explained above, according to the smoke detection device of the present invention, it is possible to automate the work of constantly monitoring the smoke emitted from the chimney of power generation equipment, etc., and to prevent the VT installation from being adversely affected by smoke, etc. This makes it possible to perform detection regardless of weather conditions, thereby improving the health of the plant.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係る煙検出装置の一実施例のブロック
構成図、第2図は本発明に係る2台のITVカメラと煙
突との関係を示す図、第3図(a;はITVカメラ1に
よる映像図、同図(b)はITVカメラ2による映像図
、同図(C)は領域分割を示す図、第4図(a)は視差
移動差分像を示す図、同図(b)は雲、煙突領域を除去
処理した図である。 1.2・・・I丁Vカメラ 3・・・チャンネルセレクタ 4・・・インターフェース 5・・・アナログプロセッサ 6・・・演算ユニット 7・・・フレームメモリ 8・・・制御プロセッサ9・
・・演算プロセッサ 10・・・表示装置11・・・高
速バス    12・・・入出力バス13・・・煙突 
     14・・・震15・・・煙 ie、 17・・・画像 18・・・領域分割像 代理人 弁理士 則 近 憲 佑 同  三俣弘文 (0)           (b) $ 3 図 (b) 第 4 図
FIG. 1 is a block diagram of an embodiment of the smoke detection device according to the present invention, FIG. 2 is a diagram showing the relationship between two ITV cameras and a chimney according to the present invention, and FIG. FIG. 4(b) is a diagram showing an image taken by camera 1, FIG. 4(b) is a diagram showing an image taken by ITV camera 2, FIG. ) is a diagram in which clouds and chimney areas have been removed. 1.2...I-V camera 3...Channel selector 4...Interface 5...Analog processor 6...Arithmetic unit 7...・Frame memory 8...Control processor 9・
... Arithmetic processor 10 ... Display device 11 ... High-speed bus 12 ... Input/output bus 13 ... Chimney
14...Earthquake 15...Smoke ie, 17...Image 18...Region division image agent Patent attorney Nori Chika Ken Yudo Hirofumi Mitsumata (0) (b) $ 3 Figure (b) Figure 4

Claims (1)

【特許請求の範囲】[Claims] (1)煙突から放出される可視状の煙を撮影する少なく
とも2台のITVカメラと、このITVカメラからのア
ナログ信号をデジタル画像に変換するアナログプロセッ
サと、前記2台のITVカメラからアナログプロセッサ
への2入力を切り変えるチャンネルセレクタと、それら
ディジタル画像から座標変換、画像演算する演算プロセ
ッサおよび画像メモリと、これら処理系を制御する制御
プロセッサと、この制御プロセッサからの出力結果を表
示する表示装置とからなり、前記2台のITVカメラの
視差から距離が既知の煙突から放出される煙を、画像処
理により背景となる煙突、雲等を分離し、2枚の画像を
視差に合せて移動し、マッチング処理して煙を検出し、
表示装置に表示することを特徴とする煙検出装置。
(1) at least two ITV cameras that photograph visible smoke emitted from a chimney; an analog processor that converts analog signals from the ITV cameras into digital images; and a link from the two ITV cameras to the analog processor. a channel selector that switches between two inputs; an arithmetic processor and image memory that perform coordinate transformation and image calculations from these digital images; a control processor that controls these processing systems; and a display device that displays the output results from the control processor. The smoke emitted from a chimney whose distance is known from the parallax of the two ITV cameras is separated from the background chimney, clouds, etc. by image processing, and the two images are moved according to the parallax, Matching process to detect smoke,
A smoke detection device characterized by displaying information on a display device.
JP23316486A 1986-10-02 1986-10-02 Smoke detector Pending JPS6388428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23316486A JPS6388428A (en) 1986-10-02 1986-10-02 Smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23316486A JPS6388428A (en) 1986-10-02 1986-10-02 Smoke detector

Publications (1)

Publication Number Publication Date
JPS6388428A true JPS6388428A (en) 1988-04-19

Family

ID=16950724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23316486A Pending JPS6388428A (en) 1986-10-02 1986-10-02 Smoke detector

Country Status (1)

Country Link
JP (1) JPS6388428A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012118698A (en) * 2010-11-30 2012-06-21 Fuji Heavy Ind Ltd Image processing system
CN103837475A (en) * 2012-11-27 2014-06-04 深圳市海洋王照明工程有限公司 Alarm circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012118698A (en) * 2010-11-30 2012-06-21 Fuji Heavy Ind Ltd Image processing system
CN102567713A (en) * 2010-11-30 2012-07-11 富士重工业株式会社 Image processing apparatus
CN103837475A (en) * 2012-11-27 2014-06-04 深圳市海洋王照明工程有限公司 Alarm circuit

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